Length at first maturity / Size / Weight / Age

Known as "king", "rose", or "hump", it is superficially similar to P. danae except that it is blotched, redder in color and larger. As in P. danae the body is stout and the shell hard, but the surface is smooth and the carapace strongly arched dorsally. There are 17 to 22 dorsal spines which occupy the anterior three fifths of the carapace and extend an equal distance on the rostrum. The distal portion of the rostrum is strongly ascending and unarmed, except at the tip, which is oblique and armed with three immovable spines.

Biology
Glossary
(e.g. epibenthic)

Maximum depth from Ref. 116014. Male yearlings (March-May) reach their sexual maturity by fall. Metamorphosis occur in spring and in shallow water (20-30 fathoms) around 2 years of age, females mature few months after (September) where spawning starts. Eggs were found by April (Ref. 82652).

Male yearlings (March-May) reach their sexual maturity by fall. Metamorphosis occur in spring and in shallow water (20-30 fathoms) around 2 years of age, females mature few months after (September) where spawning starts. Eggs were found by April (Ref. 82652).